Functions to check for common buttons/keys

button.go

@@ -89,23 +89,23 @@ func (this *Button) applyLayout () {
 }
 
 func (this *Button) handleKeyDown (key input.Key, numberPad bool) bool {
-	if key != input.KeyEnter && key != input.Key(' ') { return false }
-	return true
-}
-
-func (this *Button) handleKeyUp (key input.Key, numberPad bool) bool {
-	if key != input.KeyEnter && key != input.Key(' ') { return false }
+	if !isClickingKey(key) { return false }
 	this.on.click.Broadcast()
 	return true
 }
 
+func (this *Button) handleKeyUp (key input.Key, numberPad bool) bool {
+	if !isClickingKey(key) { return false }
+	return true
+}
+
 func (this *Button) handleButtonDown (button input.Button) bool {
-	if button != input.ButtonLeft { return false }
+	if !isClickingButton(button) { return false }
 	return true
 }
 
 func (this *Button) handleButtonUp (button input.Button) bool {
-	if button != input.ButtonLeft { return false }
+	if !isClickingButton(button) { return false }
 	if this.Window().MousePosition().In(this.Bounds()) {
 		this.on.click.Broadcast()
 	}

checkbox.go

@@ -54,23 +54,23 @@ func (this *Checkbox) OnValueChange (callback func ()) event.Cookie {
 }
 
 func (this *Checkbox) handleKeyDown (key input.Key, numberPad bool) bool {
-	if key != input.KeyEnter && key != input.Key(' ') { return false }
+	if !isClickingKey(key) { return false }
 	this.Toggle()
 	return true
 }
 
 func (this *Checkbox) handleKeyUp (key input.Key, numberPad bool) bool {
-	if key != input.KeyEnter && key != input.Key(' ') { return false}
+	if !isClickingKey(key) { return false}
 	return true
 }
 
 func (this *Checkbox) handleButtonDown (button input.Button) bool {
-	if button != input.ButtonLeft { return false }
+	if !isClickingButton(button) { return false }
 	return true
 }
 
 func (this *Checkbox) handleButtonUp (button input.Button) bool {
-	if button != input.ButtonLeft { return false }
+	if !isClickingButton(button) { return false }
 	if this.Window().MousePosition().In(this.Bounds()) {
 		this.Toggle()
 	}

dropdown.go

@@ -66,6 +66,17 @@ func (this *Dropdown) SetItems (items ...string) {
 	this.items = items
 }
 
+// Choose creates a menu that allows the user to pick a value.
+func (this *Dropdown) Choose () {
+	if this.menu != nil {
+		this.menu.Close()
+	}
+	menu, err := NewAnchoredMenu(this, this.itemList()...)
+	if err != nil { return }
+	this.menu = menu
+	menu.SetVisible(true)
+}
+
 func (this *Dropdown) itemList () []tomo.Object {
 	items := make([]tomo.Object, len(this.items))
 	for index, value := range this.items {
@@ -80,36 +91,26 @@ func (this *Dropdown) itemList () []tomo.Object {
 	return items
 }
 
-func (this *Dropdown) showMenu () {
-	if this.menu != nil {
-		this.menu.Close()
-	}
-	menu, err := NewAnchoredMenu(this, this.itemList()...)
-	if err != nil { return }
-	this.menu = menu
-	menu.SetVisible(true)
-}
-
 func (this *Dropdown) handleKeyDown (key input.Key, numberPad bool) bool {
-	if key != input.KeyEnter && key != input.Key(' ') { return false }
+	if !isClickingKey(key) { return false }
+	this.Choose()
 	return true
 }
 
 func (this *Dropdown) handleKeyUp (key input.Key, numberPad bool) bool {
-	if key != input.KeyEnter && key != input.Key(' ') { return false }
-	this.showMenu()
+	if !isClickingKey(key) { return false }
 	return true
 }
 
 func (this *Dropdown) handleButtonDown (button input.Button) bool {
-	if button != input.ButtonLeft { return false }
+	if !isClickingButton(button) { return false }
 	return true
 }
 
 func (this *Dropdown) handleButtonUp (button input.Button) bool {
-	if button != input.ButtonLeft { return false }
+	if !isClickingButton(button) { return false }
 	if this.Window().MousePosition().In(this.Bounds()) {
-		this.showMenu()
+		this.Choose()
 	}
 	return true
 }

input.go

@@ -0,0 +1,19 @@
+package objects
+
+import "git.tebibyte.media/tomo/tomo/input"
+
+func isClickingKey (key input.Key) bool {
+	return key == input.KeyEnter || key == input.Key(' ')
+}
+
+func isConfirmationKey (key input.Key) bool {
+	return key == input.KeyEnter
+}
+
+func isClickingButton (button input.Button) bool {
+	return button == input.ButtonLeft
+}
+
+func isMenuButton (button input.Button) bool {
+	return button == input.ButtonLeft
+}

labelcheckbox.go

@@ -55,12 +55,12 @@ func (this *LabelCheckbox) OnValueChange (callback func ()) event.Cookie {
 }
 
 func (this *LabelCheckbox) handleButtonDown (button input.Button) bool {
-	if button != input.ButtonLeft { return false }
+	if !isClickingButton(button) { return false }
 	return true
 }
 
 func (this *LabelCheckbox) handleButtonUp (button input.Button) bool {
-	if button != input.ButtonLeft { return false }
+	if !isClickingButton(button) { return false }
 	if this.Window().MousePosition().In(this.Bounds()) {
 		this.checkbox.SetFocused(true)
 		this.checkbox.Toggle()

swatch.go

@@ -171,23 +171,23 @@ func (this *Swatch) userSetValue (value color.Color) {
 }
 
 func (this *Swatch) handleKeyDown (key input.Key, numberPad bool) bool {
-	if key != input.KeyEnter && key != input.Key(' ') { return false }
-	return true
-}
-
-func (this *Swatch) handleKeyUp (key input.Key, numberPad bool) bool {
-	if key != input.KeyEnter && key != input.Key(' ') { return false }
+	if !isClickingKey(key) { return false }
 	this.Choose()
 	return true
 }
 
+func (this *Swatch) handleKeyUp (key input.Key, numberPad bool) bool {
+	if !isClickingKey(key) { return false }
+	return true
+}
+
 func (this *Swatch) handleButtonDown (button input.Button) bool {
-	if button != input.ButtonLeft { return false }
+	if !isClickingButton(button) { return false }
 	return true
 }
 
 func (this *Swatch) handleButtonUp (button input.Button) bool {
-	if button != input.ButtonLeft { return false }
+	if !isClickingButton(button) { return false }
 	if this.Window().MousePosition().In(this.Bounds()) {
 		this.Choose()
 	}

textinput.go

@@ -87,7 +87,7 @@ func (this *TextInput) handleKeyDown (key input.Key, numpad bool) bool {
 	} ()
 
 	switch {
-	case key == input.KeyEnter:
+	case isConfirmationKey(key):
 		this.on.confirm.Broadcast()
 		return true
 	case key == input.KeyBackspace:
@@ -114,7 +114,7 @@ func (this *TextInput) handleKeyDown (key input.Key, numpad bool) bool {
 func (this *TextInput) handleKeyUp (key input.Key, numpad bool) bool {
 	modifiers := this.Window().Modifiers()
 	switch {
-	case key == input.KeyEnter:
+	case isConfirmationKey(key):
 		return true
 	case key == input.KeyBackspace:
 		return true